deny overflow literals

Author: csmoe

src/librustc_lint/types.rs

@@ -24,6 +24,7 @@ use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64};
 use syntax::{ast, attr};
 use syntax::errors::Applicability;
 use rustc_target::spec::abi::Abi;
+use syntax::edition::Edition;
 use syntax_pos::Span;
 use syntax::source_map;
 
@@ -38,7 +39,8 @@ declare_lint! {
 declare_lint! {
     OVERFLOWING_LITERALS,
     Warn,
-    "literal out of range for its type"
+    "literal out of range for its type",
+    Edition::Edition2018 => Deny
 }
 
 declare_lint! {